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1
Methods for analyzing output from equations and computers / E.H. Timmerman.
Tulsa, Okla. : PennWell Pub. Co., c1982.
vii, 367 p. : ill. ; 29 cm.



2
Methods for improving accuracy or input into equations and computer programs / E.H. Timmerman.
Tulsa, Okla. : PennWell Pub. Co., c1982.
ix, 365 p. : ill. ; 29 cm.